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Goodwill and Intangible Assets, Net (Tables)
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes in the Carrying Amount of Goodwill
Changes in the carrying amount of goodwill were as follows: 
(In thousands) 
Balance at December 31, 2019$48,447 
Foreign exchange effects167 
Balance at December 31, 202048,614 
Foreign exchange effects(151)
Balance at December 31, 2021$48,463 
Components of Intangible Assets
The components of intangible assets, net were as follows: 
December 31,
 20212020
(In thousands)
Gross (1)
Accumulated
Amortization (1)
Net (1)
Gross (1)
Accumulated
Amortization (1)
Net (1)
Capitalized software development costs (2 years)
$1,066 $(27)$1,039 $477 $— $477 
Customer relationships
(10-15 years)
5,000 (2,375)2,625 8,100 (4,329)3,771 
Developed and core technology
(5-15 years)
4,080 (3,335)745 4,080 (3,044)1,036 
Distribution rights (10 years)
325 (269)56 352 (261)91 
Patents (10 years)
24,518 (9,015)15,503 21,601 (7,574)14,027 
Trademarks and trade names
(10 years)
800 (599)201 800 (492)308 
Total intangible assets, net$35,789 $(15,620)$20,169 $35,410 $(15,700)$19,710 
(1)This table excludes the gross value of fully amortized intangible assets totaling $43.2 million and $42.7 million on December 31, 2021 and 2020, respectively.
Amortization Expense by Income Statement Caption Amortization expense by statement of operations caption was as follows:
 Year Ended December 31,
(In thousands)202120202019
Cost of sales$27 $— $— 
Selling, general and administrative expenses3,963 6,500 7,192 
Total amortization expense$3,990 $6,500 $7,192 
Estimated Future Amortization Expense Related to Intangible Assets
Estimated future annual amortization expense related to our intangible assets at December 31, 2021, is as follows: 
(In thousands) 
2022$3,963 
20233,644 
20242,692 
20252,463 
20262,264 
Thereafter5,143 
Total$20,169